Solutions of perfluorinated polymers in CO.sub.2
US5530049A · kind A · utility
18Cited by
0References
17Claims
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Key dates
| Filing date | Sep 15, 1995 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Sep 15, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/54
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
High melting point perfluorinated tetrafluoroethylene polymers dissolved in supercritical carbon dioxide at elevated temperatures and high pressures. The solutions are useful for making foams, spun-bonded or paper-like webs, or for purification of polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.